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TX-8011
SERVICE MANUAL
SERVICE MANUAL
STEREO RECEIVER
Black model
MODEL TX-8011
120 V AC, 60 Hz
BMDD
Ref. No. 3849
092004
REMOTE CONTROLLER RC-330S
INPUT SELECTOR
DISC
SLEEP
POWER
MUTING
VOLUME
CD
TUNER
GROUP
PRESET
TAPE-1
TAPE-2
TUNER
PHONO
CD
DECK-A
DECK-B
RC-330S
SAFETY-RELATED COMPONENT
WARNING!!
COMPONENTS IDENTIFIED BY MARK
ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.


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TX-8011
SPECIFICATIONS
Amplifier Section
Power Output
Front L/R
50 W + 50 W
(8ohm , 20 Hz-20 kHz, FTC)
Dynamic Power
105 W + 105 W (4 ohm )
70 W + 70 W (8 ohm)
THD (Total Harmonic Distortion)
0.08 % (Power Rated)
Damping Factor
60 (Front, 1 kHz, 8 ohm )
Input Sensitivity and Impedance
150 mV/50 kohm (LINE)
2.5 mV/50 kohm (PHONO MM)
Output Level and Impeadance
150 mV/2.2 kohm
(REC OUT)
Phono Overload
120 mV (MM 1 kHz 0.5 %)
Frequency Response 10 Hz-100 kHz/+1 dB -3 dB
(TONE FLAT, CD, TAPE-1,
TAPE-2/MONITOR)
Tone Control
±10 dB, 50 Hz (BASS)
±10 dB, 20 kHz (TREBLE)
SN Ratio
100 dB (LINE ,IHF-A)
80 dB (PHONO, IHF-A)
Speaker Impedance
4 ohm
Tuner Section
FM
Tuning Frequency Range
87.5 MHz-108.0 MHz
Usable Sensitivity
Stereo 17.2 dBf 2.0 µV(75 ohm IHF)
Mono 11.2 dBf 1.0 µV(75 ohm IHF)
S/N Ratio
Stereo 70 dB (IHF-A)
Mono 76 dB (IHF-A)
THD
Stereo 0.25 % (1kHz)
Mono 0.15 % (1kHz)
Frequency Response 30 Hz-15 kHz/±1.5 dB
Stereo Separation
45 dB ( 1kHz )
AM
Tuning Frequency Range
530 kHz-1710 kHz
Usable Sensitivity
30 µV
S/N Ratio
40 dB
THD
0.70%
General
Power Supply
AC 120 V, 60 Hz
Power Comsumption 180 W
Stand-by Power Comsumption
1.35 W
Dimensions(W x H x D)
17-1/8" x 5-7/8" x 12-11/16" inches
435 x 150 x 322 mm
Weight
16.3 lbs
7.4 kg
Analog Inputs
PHONO, CD, TAPE-1, TAPE-2/
MONITOR
Analog Outputs
TAPE-1, TAPE-2/MONI
Speaker Outputs
4(SP-A, SP-B)
Phones
1
Specifications and features are subject to change with-
out notice.


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TX-8011
SERVICE PROCEDURES
1. Replacing the fuse
This symbol located near the fuses indicates that the
fuse used is fast operating type. For continued protection against
fire hazard, replace with same type fuse. For fuse rating refer to
the marking adjacent to the symbol.
Ce symbole indique que le fusible utlise est a rapide.
Pour une protection permanente, n'untiliser que fusibles de
meme type. Ce darnier est la qu le present symbol est
appse.
CIRCUIT NO.
PART NO.
DESCRIPTION
F901
252163
4A-UL/T-237,Fuse
2. To initialize the unit
This device employs a microprocessor to perform various
functions and operations. If interference generated by an external
power supply, radio wave, or other electrical source results in
accident which causes the specified operations and functions to
operate abnormally.
To perform a result, please follow the procedure below.
1.Press and hold down the TAPE 1 button, then press the
DIRECT TUNING button.
2.After "CLEAR" is displayed, the preset memory stored in the memory,
are initialized and will return to the factory setting.
3. Safety-check out
(Only U.S.A. model)
After correcting the original service problem, perform the
following safety check before releasing the set to the customer.
Connect the insulating-resistance tester between the plug of power
supply cord and screw on the back panel.
Specifications: 3.3Mohm
10% at 500V.
4. Memory Preservation
This unit does not require memory preserv ation batteries. A
built-in memory power back-up system preserv es the contents
of the memory during po wer f ailures and even when the unit is
unplugged. The unit must be plugged in order to char ge the
back-up system.
The memory preserv ation period after the unit has been
unplugged v aries depending on climate and placement of the
unit. On the average, memory contents are protected over a
period of a fe w weeks after the last time the unit has been
unplugged. This period is shorter when the unit is exposed to a
highly humid climate.


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TX-8011
EXPLODED VIEW
TX-8011
A201
A202
P711
P102
Q522 Q524
Q523
Q521
P901
A002
A001
A024
A016
A352
A013
A005
A002
A006
A007
A002
A024
A020
A024
T901
E801
A040
A041
A023
A013
A024
A024
A024
A300
A302
A303
A301
A030
A301
A021
A026
E801
A004
A011
A010
A013
A013
A013
A013
A015
A011
A018
A205
A206
A207
A205
A206
A207
A035
A011
A306
A211
A210
A202
A016
A203
A202
A204
U4
U6
U8
U7
U5
U9
U11
U3
U1
U2
F901
D911
A
1
2
3
4
BCD
E


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TX-8011
BLOCK DIAGRAM
TX-8011
THERMAL
FUSE
RPM7138-H4
TUNER
PACK
Q302
SELECTOR
SWITCH
RIGHT
L
R
SPEAKER
B
L
R
SPEAKER
A
SPEAKERS
HEADPHONE
STB
DATA
CL
U701
REMOTE
SENSOR
MUTE
PROTECT
SP B
SP A
45 POWER
47 REMIN
OPERATION
KEIES
K0-K4
Q702
FL TUBE
Q707
BUFFER
SYS
IN
46
SYS
OUT
41
Q592
SPEAKER B
RELAY SW
+B
+B
Q591
SPEAKER B
RELAY SW
Q951
POWER
RELAY SW
RL901
F901
P902
120V
60Hz
CONST.
VOLTAGE
Q921
Q923
Q922
Q924
TO FL TUBE
Q481
VOLUME
MOTOR DRIVER
Q701 MICROPROCESSOR
RI
IN/OUT
VOLUME
R409,R415
BASS,TREBLE
R410,R416
BASS,TREBLE
M
Q491
MUTE
SW
Q492
MUTE
SW
Q493
GATE
CIRCUIT
L-CH
POWER
AMP.
R-CH
POWER
AMP.
Q525
CURRENT
DET.
Q526
CURRENT
DET.
Q583
GATE
CIRCUIT
Q581,582
DC
DET.
A
1
2
3
4
BCD
E
+
-
-
+
+
-
-
+
PHONO
CD
REC
PB
REC
PB
TAPE 1
TAPE 2
Q301
EQ
AMP.
Q302
SELECTOR
SWITCH
R393
BALANCE
VOLUME
Q703
RESET
ST
ANDBY/RCV
RL592